Features: Upgrade automotive HVAC systems effortlessly with this R134A adapter, featuring quick connection design for fast refrigerant line conversion . Crafted from corrosions resistant aluminum alloy and reinforced plastic, this coupler integrates leak proof O rings seals to ensures secure connection during refrigerant charging or maintenance. Ideal for professional mechanics, DIYer enthusiasts, and automotive repair shops requiring reliabled retrofitting solution for vintage or modern vehicle air conditioning systems. Streamlines HVAC servicing tasks in garages or workshops – perfect for refrigerant refills, systems upgrades, or emergencies repairs on cars, trucks using incompatible refrigerant standards. Simplify complex HVAC conversions with tool less installation and color coded high/low pressure ports, for automotive refrigerant handling safety and efficiency. Specifications: Component: Plastic Metal Copper joints, the color of electroplating is white, The internal thread has two threads: 1/4 and 3/16 threads Package Includes: 1 Set Automotive Refrigerants Adapter note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.